Thread-tacking machine



1922 3 Sheets-Sheet 1 C7. VCHQI 2;, %MWI flan/7, 47

G VENDlTTl THREAD TACKING MACHINE Filed Aug. 9,

July 8 1924.

NW Z

July 8 1924. 1,500,969

G. VENDITTI THREAD TACKING MACHINE Filed Aug. 9, 92 3 Sheets-Sheet. 2

Juiy 8 1924.

G. VENDITTI THREAD TACKING MACHINE Filed Auz. 1922 3 Sheets-Sheet. 5

30 the machine Patented'duly 8, 192 4 uNirile-l;ST TES PATENT OFFICE.

I Application filed August 9, 1922.. Serial No. 580,788.

To all whom it may concern:

Be it known that I, GAs'roN VnNm'r'rI, a subject of the-King of Italy, and residing at Paris, France, have invented certain new and useful Improvements in Thread-Tacking Machines, of which the following is a specification.

The present invention relates to a portable machine, which is moved by hand over! 10 two thicknesses of cloth or the like so,as"to follow a redetermined outline, andwhich is intende to form tacking threads through the 'two thicknesses of cloth, thereby producing loops upon the under face of the lower cloth, so that by slightly separating the two thicknesses of cloth and by cutting the thread between them the thread-ends or the loops remaining upon the two opposite faces, form on the two thicknesses of cloth, two symmetrical outlines or patterns.

This machine thus enables two symmetrical pieces of cloth to be obtained, for instance for sleeves, trousers legs or the like articles. In this machine, the needle is mounted at the extremity of an arm, which receives an alternating movement of sufiicient length for the needle to enter and recede from the cloth after having formed and left a loose thread loop u on the lower face of the cloth,

eing automatically held stationary by a clampin device when the needle enters the two t icknesses of cloth, after which the needle passes out from the cloth and returns to the end of its stroke, where it stops, whilst the machine is moved along by hand for a distance corresponding to the interval between two successive loose thread loops.

The annexed sheets of drawings repre- 40 sent by way; of example, one form of constructing t e thread-tacking machine according to the invention.

Figure 1 is an elevation of one side of this machine.

Figure 1 is a artial' corresponding view for another position of the arts.

Figure 2 is the correspon ing view of the other side.

' Figure 3 is a transverse vertical section on line 3 -3 of Fi res 1 and 2, the machine being viewed en wise from the rear, i. e.

vseen'from the left of Figure 1 and from the sion arm bwhich by means of toothed sectors b and 6 actuates a toothed sector 0 pivoted at c to the housing a. The movable lever 6 comprises at its rear extremit. a boss I) formin an abutment for the p ate spring I) and a so forming a stop upon the fixed lever 12.

The toothed sector 0 meshes (see Figures 2 and 3) with a toothed pinion c which is fast to a ratchet wheel a and loosel mounted on the shaft (1 of a flywheel (2 journaled in the housing a. Upon this shaft 03 is keyed a plate a carrying a pawl 0 held in engagement with the ratchet wheel a by means of a spring 09. When the two levers 180 b b are brought together, scissors-fashion, the toothed sector 0 actuated by the arm 6 causes the shaft (1 to turn in the direction of are arrow (Figure 2) by the intermediary of the pinion c, the ratchet wheel 0 the pawl c and the plate a; this shaft 03 is not affected when the lever b resumes its initial position under the action of the plate spring so that theshaft of the flywheel dthus receives an intermittent movement of rotation in the same direction by the operation of the levers b b.

Upon the shaft (1 is keyed, u n the op-- posite side of the flywheel d, a p ate e which is provided with a pawl e kept in engagement by a spring e with the notch f in a plate 7 loosely mounted on the shaft d. This plate 7 is fitted with a stud f engaging in the slot g in an arm 9 pivoted at g to the upper part of the housing.

At its lower extremity the army is provided with a. needle h slightly inclined from the horizontal; this needle is fed with thread by the spool or reel h supported b the spindle b the thread passing throug the thread-guides h and h on its way from the spool k to the needle k.

The needle-car ing arm 9 receives a movement of oscil ation around its axis 9 by the crank-disc f driven by the plate e fast to the shaft d of the flywheel d The machine rests upon the material by three toothed wheels z i mounted upon a s indle z" journaled at the lower part of t e housing (1; .upon this s indle i is likewise keyed a disc 5 provi ed wlth notches i These notches are intended to receive a pawl 7' subject to the action of a sprm 1 this pawl constitutes one arm of a ever pivoted at 7' upon the housing (1 Another arm of this lever, j, is situated in the path of a spur 9 extending laterally from the needle-carrying arm 9. A thlrd arm 9" carries an eccentric ramp j intended to come into action u on the tail of the pawl e effecting the .rive ofsthe crank-disc f by the plate e; this arm j ends in a claw 9' adapted to come into the path of a pin 1" arranged at the periphery of the disc 7'- drlving the needle-carrying arm.

In the operation of this machine, it is caused to travel by being pushed forward over two superposed thicknesses of material, following a pattern or outline traced upon the top material, whilst the levers b b are operated in such a manner as to transmit, as above explained, a movement of intermittent rotation to the shaft d of the flywheel and a movement of oscillation to the arm 9 carrying the needle h. At the moment when the needle h enters the two superposed thicknesses of material k I (Figure 5) the machine is automatically stopped,

the pawl j being maintained by its spring 7' in engagement with one of the notches i of the disc 2' and thus reventing the rotation of the toothed wheels z i, that is to say, preventing the machine from rolling upon the cloth (position represented in Figure 1). At the end of the stroke of the needle entering the cloth, the spur g upon the needle-carrying arm 9 comes against the arm j of the three-armed lever (position represented in Figure 1) causing this lever to oscillate around its pivotal axis j; the pawl j is thus released from the notch 2' upon the disc i. The machine can then roll forward upon the cloth, for a distance a: (Figure 5) corresponding to the interval between two adjacent notches, until the pawl j comes again into engagement at the next notch. During this movement of the machine, the three-armed lever is maintained in its position by the fact that the point of thepawl y is in engagement with the periphery of the disc i between the two notches; the arm 7" of this lever hasbrought the eccentric ran p j into the ath of the tail of the pawl e, so that the plittes e and f will be disconnected from one another at the moment when the awl e passes in front of the ramp j. At t e same time the pin f upon the crank-disc f will have struck against the spur j on the arm i. The plate of is therefore no longer driven y the shaft of the flywheel. During this time the needle-carrying arm 9 will have returned to its former position (see Figure 1), withdrawing the needle h from the material and returning it to the end of its rearward stroke, where it will remain stationary. As soon as the pawl 7' has come again into enga ement with the following notch upon the isc i, that is to say,-as soon as the machine is again stationary relatively to the material, due to the oscillating movement of the lever having the three arms j, j, 7', under the action of spring 7', the spur j is brought outside of the path of the pin C, of the crank disc f, and the ramp 9'' is rought outside of the path of the pawl e, the pawl e is again brought by its spring e into engagement with the notch f of the crank-disc f; the latter again" actuates the needle-carrying arm 9 and the needle it again leads the thread through the two thicknesses of material 70 landforms a fresh thread loop m. When the machine has followed the whole of the attern or contour figured on the material la,t e two thicknesses of material In and Z are slightly se arated one from the other and the threa is out between the two cloths or layers of material; thus there are obtained for the two opposite faces of the material two symmetrical'outlines or patterns formed one by the loops m anc)l the other by the thread ends n (Figure 5 In order, that the needle h shall not drag the thread 0 when passing out from the material, the needle is formed on either side of the hole or thread-eye 32 (Figure 4) with grooves 10 p in alignment with each other 1n the u per face and in the lower face of the need e, in such a way as thus to reduce friction between the thread and the needle: the thread which has been introduced through the material is thus easily retained by friction exercised between the thread and the material, so that it forms a loop m (Figure 5) when the needle passes out from the material.

It is understood that the described and illustrated form of carrying out the invention, is given only by way of example, and that numerous modifications can be made without departing from the principle of the invention; thus for instance, the arrangement for effecting the rotatory movement of the flywheel shaft of the machine can be modified; this hand-control might also be replaced by a small electric motor mounted onthe machine and receiving current from flexible conductors leading from a source. I

What I claim is:

l. A portable machine for running tacking threads through 'two superimposed thicknesses of cloth or the like along a pre determined outline, comprising a housing, a needle carrier pivotally mounted'thereon, means for imparting to the said needle carrier an alternating movement of a stroke suflicient to allow of the needle entering and passing through both thicknesses of material and coming back out therefrom after having formed and left behind, each time, a loose loop of thread upon the under face of the lower cloth, locking means for automatically stopping the machine during the period the needle enters the twothicknesses of material, means for automatically stoppin the movement of the needle when it reac es the end of its backward stroke, means for automatically releasing the looking means of the machine, and hand actuated means for advancing said machine along the predetermined outline to the extent of a distance corresponding with the spacing apart of two consecutive loops of thread, for the purpose described.

2. In a thread tacking machine as claimed in claim 1, the provision of a needle-carrier pivotally mounted on the housing of said machine, a shaft journalled in said housing, a fly wheel keyed on said shaft, means for rotating said shaft, a crank disc loosely mounted upon the shaft of said fly-wheel and engaging by its crank-pin the said needle carrier, and a pawl mechanism adapted to connect said crank-disc to the shaft of the fly-wheel and to actuate the needlecarrier.

3. In a thread tacking machine as claimed in claim 1, the provision of a needle-carrier pivotally mounted on the housing of said machine, a shaft journalled in said housing, a fly wheel keyed on said shaft, means for rotating said shaft, a crank disc loosely mounted upon the shaft of said fly-wheel and engaging by its crank pin the said needle-carrier, and a pawl mechanism adapted to connect said crank disc to the shaft of the fly wheel and to actuate the needlecarrier, the arrangement of two pivoted levers, one of which is fast with the housing of the machine and the other of which comprises a toothed sector, a corresponding toothed sector gearing therewith and with a pawl mechanism, adapted to impart an intermittent rotation to the fly wheel shaft which actuates the needle-carrying arm.

4. In athread tacking machine as claimed in claim 1, the provision of toothed wheels adapted to rest upon the material, and journaled at the lower part of the housing, a disc with notches fast with said wheels, and

supply member adapted to unlatch the locking pawl from the notches of the disc fast with the carrier wheels of the machine, at the end of the inward stroke of the needle, for the purpose described.

6. In a thread tacking machine as'claimed in claim 1, the provision of toothed wheels adapted to rest upon the material, and journaled at the lower part of the housing, a disc with notches fast with said wheels, and a spring controlled locking pawl pivotally mounted on the housing and adapted to enter said notches, for the purpose described, comprising, a housing, a needle-carrier, pivotally mounted on the housing, a shaft journaled in the housing, a fly wheel keyed on the shaft, means for rotating the shaft, a crank disc loosely mounted on the shaft and engaging by means of a pin, the needlecarrier, a pawl mechanism, for connecting the crank disc to the shaft and for actuating the needle-carrier, and a lever pivoted on the housing machine? in combination with a locking pawl on the pivoted lever, the lever comprising an arm for disconnecting the crank disc from the shaft of the fly wheel at the end of the backward stroke of the needle-carrier.

7. In a thread tacking machine as claimed in claim 1,'the provision of toothed wheels adapted to rest upon the material, and journaled at the lower part of the housing, a disc with notches fast with said wheels, and a spring controlled locking pawl pivotally mounted on the housing and adapted to enter said notches, for the purpose described, comprising a housing, a needlecarrier, pivotally mounted on the housing, a shaft journaled in the housing, a fly wheel keyed on the shaft, means for rotating the shaft, a crank disc loosely mounted on the shaft and engaging by means of a needle-carrier, a pawl mechanism or connectin the crank disc to the shaft and for actuatlng the needle-carrier, and a lever pivoted on the housing machine, in combination with a locking pawl on the pivoted lever, the lever comprising an arm for disconnecting the crank disc from the shaft of the fly wheel at the end of the backward stroke of the needle-carrier, the provision, on the disconnecting arm, of a finger adapted to cooperate with a pin upon the crank in, the

- 1- disc to stop the rotation thereof and of the upger and lower faces of the needle, and on needle-carrier after disconnection of the alt er side of the thread hole, for the'pursaid crank disc from the fly wheel shaft. pose described.

8. Ina thread tacking machine as claimed In testimony whereof I have signed my 6 in claim 1, a needle arran (1 upon a needle name to this specification. 1

carrier in a position inclined to the horizontal, and in a direction opposite to that GASTON VENDITTI. of movement of the machine upon the cloth Witnesses: to be operated on and ooves rovided in T. ARMENGAUD, aine,

l0 alignment the one wit the ot er, in the M. DEmvRIMoNr. 

